| Characteristics | Items | 92 % Series | 75 % Series |
| Chemical Composition | Al2O3(%) | 92+/-1% | ≥75% |
| SiO2(%) | ≤7% | --- | |
| CaO+MgO+Fe2O3+Others(%) | ≤2% | --- | |
| Physical Properties | Bulk Density(g/cm3) | ≥3.60 | ≥3.26 |
| Hardness(Mohs) | ≥9 | ≥8 | |
| Water Absorption(%) | ≤0.01 | ≤0.01 | |
| Color | White | White |